Question Description
Define Leukemia?

Final Answer

Leukemia is a cancer that starts in blood stem cells in bone marrow, making it especially hard to localize as it carries throughout the body once in the bloodstream.
Try reviewing this:
and/or this:
https://www.google.ca/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CCoQFjAA&url=http%3A%2F%2Fen.wikipedia.org%2Fwiki%2FLeukemia&ei=oVJsU8vSJdLpoATwp4CABA&usg=AFQjCNFjFd0Eqviqj3OWuWYXT_gHT9VK6A&sig2=38bfkGKKyyokjP-ul-5s3A&bvm=bv.66330100,d.cGU
